[enh] stat bar graphs

searx/engines/__init__.py

         engine['percentage'] = int(engine['avg']/max_results*100)
 
 
-    return [('Page loads', sorted(pageloads, key=itemgetter('avg'), reverse=True))
+    return [('Page loads (sec)', sorted(pageloads, key=itemgetter('avg'), reverse=True))
            ,('Number of results', sorted(results, key=itemgetter('avg'), reverse=True))
            ]

searx/static/css/style.css

 
 .invisible { display: none; }
 
+.left { float: left; }
+
 .image_result { float: left; margin: 10px 10px; position: relative;  height: 160px;}
 .image_result img { border: 0;  height: 160px;}
 .image_result p { margin: 0; padding: 0; }
 .image_result p span a { display: none; }
 .image_result p span a { color: #FFFFFF; }
-.image_result p:hover span a { display: block; position: absolute; bottom: 0; right: 0; padding: 4px; background-color: rgba(0, 0, 0, 0.6); font-size: 0.7em; }
+image_result p:hover span a { display: block; position: absolute; bottom: 0; right: 0; padding: 4px; background-color: rgba(0, 0, 0, 0.6); font-size: 0.7em; }
+
+.percentage { position: relative; width: 300px; }
+.percentage div { background: #444444; }
+td { padding: 0 4px; }
+tr:hover td { background: #DDDDDD; }

searx/templates/stats.html

 <h2>Engine stats</h2>
 
 {% for stat_name,stat_category in stats %}
-<div>
+<div class="left">
     <table>
         <tr colspan="3">
             <th>{{ stat_name }}</th>
         {% for engine in stat_category %}
         <tr>
             <td>{{ engine.name }}</td>
-            <td>{{ engine.percentage }}</td>
-            <td>{{ engine.avg }}</td>
+            <td>{{ '%.02f'|format(engine.avg) }}</td>
+            <td class="percentage"><div style="width: {{ engine.percentage }}%">&nbsp;</div></td>
         </tr>
         {% endfor %}
     </table>